206152091 has 2 divisors, whose sum is σ = 206152092. Its totient is φ = 206152090.

The previous prime is 206152057. The next prime is 206152153. The reversal of 206152091 is 190251602.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 206152091 - 2¹⁴ = 206135707 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 206152091.

It is not a weakly prime, because it can be changed into another prime (206151091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103076045 + 103076046.

It is an arithmetic number, because the mean of its divisors is an integer number (103076046).

Almost surely, 2^206152091 is an apocalyptic number.

206152091 is a deficient number, since it is larger than the sum of its proper divisors (1).

206152091 is an equidigital number, since it uses as much as digits as its factorization.

206152091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 206152091 is about 14357.9974578630. The cubic root of 206152091 is about 590.7393689516.

The spelling of 206152091 in words is "two hundred six million, one hundred fifty-two thousand, ninety-one".